Jacking apparatus



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JACKING APPARATUS Filed June 9, 1922- 2 Sheets-Sheet .1

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JACKING APPARATUS Filed June 9, 1922 2 Sheets-Shes: 2

Patented Oct. 7, 1924.

JOHN GUTMANN, 33., OF BIDGEWOOD, NEW YORK.

JACKING APPARATUS.

Application filed June 9,

To all whom it may concern:

Be it known that 1, JOHN GUTMANN, J r., a citizen of the United States, residing at Ridgewood, in the county of Queens and State of New York, have invented new and useful Improvements in Jacking Apparatus, of which the following is a specification.

This invention relates to jacking apparatuses.

More particularly the invention relates to the kind of apparatus which is disclosed in an application filed by me April 12, 1921, Serial Number 466,845, and allowed October 24., 1921.

Some of the objects of the present invention are: to improve the apparatus disclosed in the said application by simplifying the same in certain respects and by reducing the number of parts; to attach comparatively large base plate to the screw of each jack so that two jacks will sufiice for raising and lowering operations; to operate the jacks from the shaft of the engine of the vehicle to which the jacks are attached; and with other objects in view the invention resides in the particular provision, construction and utility of parts hereinafter fully described and illustrated in the accompanying drawings, in which:

Figure 1 is a diagrammatic view illustrating conventionally the combination of elements constituting the apparatus of the present invention.

Figure 2 is a sectional view through one of the clutch units.

Figure 3 is a sectional view through one of the jack units.

Figure 4 is a partial sectional view taken on the line 47- 1, Figure 3.

Figures 5 and 6 are detail views of the control lever.

Figure 7 is a top plan view of one jack and its clutch mechanism. V

Referring now more particularly to the several views ofthe drawings, it will be apparent that the apparatus of the present invention will include the power shaft 10 of an engine 11 of a vehicle or automobile. Only so much of the automobile has been shown as to make clear the application of the elements of the present invention. Two jacks 12 are employed. The jacks are identical in construction, and both are operated from a common driven shaft which derives power from the power shaft 10. Two

1922. Serial No. 567,127.

clutches 13 are employed between the jacks 12 and the driven shaft. The clutches 13 are identical in construction. Manually operable means 14 is employed in conjunction with each clutch 13 so that one jack may be operated independently of the other jack. Means also is employed in conjunction with each jack and its clutch to automatically stop the operation of the j ack-screw. Inasmuch as each jack is identical in construction and operation one jackfor the sake of convenience will be described presently.

Each jack 12 includes a casing 15 of two parts which are bolted together as at 16. The said casing has a removable cap 17 to allow access to the interior of the casing for oiling and greasing parts. The said casing also has an attaching extension 18 with which the attachment of the jack to a part of the vehicle is eflected. The casing-parts embody respectively portions 19 and 20 which form a hole for the screw 21. The upper end of the screw 21 has detachably connected thereto a head 22 having grooves 23 therein which accommodate ribs 24 on the insides of the parts of the casing 15 to prevent the rotation of the said head 22. The lower end of the screw 21 has detachably connected thereto a base member or foot 25v which encounters the road surface in the jacking operation.

In order that the screw 21 of each jack may be moved in opposite directions, the clutches 13 are employed. Inasmuch as the clutches 13 are identical in construction and operation one will be described. The clutch includes a casing 26 through which a shaft 27 extends and which is journalled in bearings of the said casing 26. The said shaft 27 also extends through its casing 15 of the related jack 12 and is rotatably supported by the portion 19 and the wall of the casing as shown in Figure 4 of the drawings. A clutch element 28 comprising a bevelled gear 29 and a toothed member 30 is loosely mounted on the shaft 27 within the casing 26, and a similar clutch element 31 comprising a bevelled gear 32 and a toothed member 33 is mounted on the shaft 27 within the casing 26. A third clutch element 34 is loosely splined on the shaft 27 and the same is arranged between the clutch elements 28 and 31. The said element 34 has a toothed end 35 and a toothed end 36 respectively. The toothed end 35 coacts with the toothed member 30, whereas, the toothed end 36 coacts with the toothed member 33. Motion is imparted to the clutch elements 28 and 31 by virtue of a bevelled gear 37 which meshes with the gears 29 and 32 to rotate them in opposite directions. The gear 37 is attached to the end of a shaft 38. The shaft 38 is arranged between each of the gears 37 of the two clutches 13. The shaft 38 embodies universal joints 39 and has keyed thereto a sprocket 40. The shaft 38 is driven from the engine shaft 10 through the intervention of a sprocket 41 attached to the shaft 10 and a chain 42 which is passed over the sprockets 40 and 41.

In order to effect the movement of the clutch element 34 for coaction with either of the clutch elements 28 and 33 there is provided manually operable means 14 hereinbefore referred to. The said means includes a yoke 43 which straddles the shaft 27 and which is connected to a rod 44 mounted for sliding movement in bearings formed in the walls of the casing 26. A small shaft 45 is mounted in the instrument board of-the vehicle in suitable bearings. One end of the shaft 45 has a member 46 and the other end of the shaft 45 has an operating handle 47. A plate 48 is attached to the instrument board. The plate 48 has certain indicia on one face thereof, namely; Raise Neutral and Lower, and the said plate also has a small depression or recess 49. The handle 47 has a pointer 50, which with the indicia, serve as a means for knowingly carrying out certain operations. The handle 47 also has a spring actuated pin 51 whose free end moves into and out ofthe recess 49 when pressure is exerted on the handle. The in and recess serve mainlyto hold the han 1c in the neutral position. One end of the member 46 has connected thereto a pull wire or the like 52 and the latter is also connected to the yoke 43. A. second pull wire or the like 53 connects the yoke 43 with the member 46. The pull wires 52 and 53 are passed over pulleys 54 to facilitate their movement and to exert the pulling forces to the yoke 43 in the proper directions.

In order that the clutch element 34 may be automatically moved out of engagement with either of the other clutch elements 28 and 31, there is provided means described presently. The head 22 has an actuating member 55 and the foot 25 has an actuating arm 56. An L-shaped member 57 is pivoted to the casing 15 and one portion is connected to the rod 44; the other portion 58 is disposed in the path of movement of the actuating members 55 and 56. The portion 58 extends through an opening in the casing 15.

Motion is imparted to each screw 21 by employing a gear 60 which has screw threads adapting the same for screw threading coaction with the related screw. The gear 60 is held against longitudinal movement with respect to the screw by thrust bearing members 61 positioned between the gear and the portion 20 and a boss formed on portions 62 of the parts of casing 15. The gear 60 of each jack meshes with a gear 62 at each end of the shaft 27.

One jack is preferably attached to the front axle of the vehicle at a central point thereof, whereas, the other jack is preferably attached to the casing surrounding the differential gearing. One clutch 13, as stated is associated with each jack, and the same is attached to same vehicle part to which its related jack is attached, or it may be attached to any other part of the vehicle so long as it gives a fixed relation of the clutch to the jack. Each clutch 13 is operated by manually operable means 14 therefore there will be two operating handles 47' within easy reach of the operator of the vehicle. By operating either handle 47 the action that follows will be the same in each case.

The operation of one jack is as follows:

By moving the particular operatinghandle 47 so that the ointer 50 thereof registers with the word aise, the clutch element 35 will be moved so that the toothed end thereof, and the toothed member 30 of the clutch element 28 will be in meshing engagement with each other. That causes the rotation of the gear 60, and as a consequence the screw 21 will move downwardly. This downward movement of the screw may be stopped by simply moving the handle 47 to a position in which its pointer registers with the word Neutral. gagement of the clutch elements. In the event that the handle 47 is not moved to stop the rotation of the screw, the actuating member 55 will encounter the portion 58 of the member 57 with the result that the rod 44 will be pulled and consequently the connected parts will be disengaged, namely; the yoke and clutch elements. It will be obvious that the latter operation is automatic and causes the movement of the handle to a neutral position. The manipulation of the handle also causes the positioning of the portion 58 of the member 57 so that no matter whether the screw is being lowered or raised, and no matter whether the handle is manipulated to stop the movement of the screw, the screw will stop moving automatically.

Wnat is claimed is:

A jacking apparatus of the character described comprising a pair of jacks independently operated and operatively associated with each other, a clutch element associated with these jacks, a shaft longitudinally disposed with regard to the clutch elements and having one end received by the 'ack for the operation thereof, a rod passlng through the clutch elements parallel with That causes the disenthe shaft and one end thereof being associated with the adjacent jack, a pair of spaced bevelled gears fixed to the shaft, a toothed member formed on the inner portion of each bevelled gear, spaced toothed elements slidably mounted on the shaft and each adapted to coact with the adjacent toothed member, a yoke depending from the rod and surrounding the shaft for engaging 10 the toothed elements snugly for moving them in cooperative position with the toothed member, an operatin handle, and flexible means having the en s thereof secured to the operatin handle and the yoke respectively as and or the purpose specifie In testimony whereof I hereby aflix my signature.

JOHN GUTMANN, JR. 

